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61980458101 = 593073421877
BaseRepresentation
bin111001101110010100…
…101011110001110101
312220222112011111112021
4321232110223301311
52003413444124401
644250132153141
74322635126012
oct715624536165
9186875144467
1061980458101
11243163975a1
12100191687b1
135ac9b517a3
142ddd902709
15192b5552a1
hexe6e52bc75

61980458101 has 8 divisors (see below), whose sum is σ = 63236305440. Its totient is φ = 60731455248.

The previous prime is 61980458069. The next prime is 61980458107. The reversal of 61980458101 is 10185408916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61980458101 - 25 = 61980458069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61980458107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692826 + ... + 1729051.

It is an arithmetic number, because the mean of its divisors is an integer number (7904538180).

Almost surely, 261980458101 is an apocalyptic number.

It is an amenable number.

61980458101 is a deficient number, since it is larger than the sum of its proper divisors (1255847339).

61980458101 is a wasteful number, since it uses less digits than its factorization.

61980458101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422243.

The product of its (nonzero) digits is 69120, while the sum is 43.

The spelling of 61980458101 in words is "sixty-one billion, nine hundred eighty million, four hundred fifty-eight thousand, one hundred one".

Divisors: 1 59 307 18113 3421877 201890743 1050516239 61980458101